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Cambridge IGCSE Combined Science practice

Paper 3 structured question: Ions and ionic bonds

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Ions and ionic bonds

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Paper 3Theory (Core)4 marks

Properties of ionic compounds.

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Properties of Ionic Compounds

Ionic compounds are typically solid at room temperature, have high melting points, and conduct electricity when dissolved in water.

  1. a

    Discuss the properties of ionic compounds and how these properties relate to ionic bonding.

    Aim for approximately 4 distinct marking points.

    [4]

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Paper 3 structured question: Ions and ionic bonds

Paper 3Theory (Core)3 marks

Description

Ionic Bonding in NaCl

Sodium chloride is formed when sodium (Na) and chlorine (Cl) react. Sodium loses one electron to become Na+, while chlorine gains that electron to become Cl-. The resulting Na+ and Cl- ions attract each other, forming NaCl.

  1. a

    Explain the process of ionic bonding in sodium chloride.

    Aim for approximately 3 distinct marking points.

    [3]